-------- Original Message --------
Subject:        1615 Jannsonius map actually post-1790?
Date:   Tue, 30 Apr 2013 01:07:48 +0000
From:   Brendan Whyte <[log in to unmask]>
To:     AMC <[log in to unmask]>, Carto-soc
<[log in to unmask]>, mapsL <[log in to unmask]>



The National Library of Australia has what we thought was a double
hemispherical map of the world by Nicolaes van Geelkercken and Jan
Jansson, printed in Amsterdam in 1615 (according to the cartouche in the
eastern hemisphere). http://catalogue.nla.gov.au/Record/2702518

However a patron has pinted out that next to Taurus/Orion and Gemini in
the surrounding zodiac feature the "petit telescope de Herschel" and the
"Gr[an]d telescope de Herschel" respectively.
The latter appears to be Sir William Herschel's (1739-1822)  40-foot
telescope, built 1785-89 and used up until 1815.
So the map appears to have been (anonymously) revised and reprinted
ca.1790 or later!

Given there is no obvious publisher/place/date, does anyone know
anything about this map? Who might have produced it, and when?
Did the 1615 original have the Zodiac surrounds as well, so that the
reviser has simply added the telescopes,  or has the reviser added the
whole celestial surrounds?

Any leads appreciated!

Dr Brendan Whyte

Assistant Curator of Maps

National Library of Australia